Envelop.



PatentedvAp. l, |902. w. A., HAMMOND a J. c. KAHLE.

No. 696,43I.

- ENVELuP. (Application tiled July 10, 1901.)

(In Model.)

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WIIiIiIAM A. HAMMOND AND JAMES O. KAI-ILE, OF OIL CITY, PENNSYLVANIA.

ENVELOP.

SPEOKFICATON formingpart of Letters Patent No. 696,431, dated April 1, 1902.

Application led .Iuly 10, 1901. Serial No. 67,750. (No model.)

T0 @ZZ whom, t may concern:

Be it known that we, WILLIAM A. HAMMQND and JAMES C. KAHLE', citizens of the United States, residing at Oil Oity, in the county of Venango and State of Pennsylvania, have invented certain new and useful DImprovements in Envelops, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

Our invention has relations to improvements in envelops; and it consists in the novel construction of envelop more fully set forth in the specification and pointed out in the claim. Y

In the drawings, Figure l is a plan of the original blank unfolded. Fig. 2 is a plan showing blank partially folded. Fig. 3 is a plan showing all parts folded with the exception of the sealing-flap, and Fig. 4 is a plan of the envelop completely folded and sealed.

The object of our invention is to construct an envelop which will insure against access to its contents by unauthorized persons, being in this respect a guarantee of great security.

Afurther object is to construct an envelop which will be simple and cheap to manufacture.

In detail the invention may be described as follows:

Referring to the drawings, 1 represents the body portion or center of the blank; 2 2, the end wings; 3, the bottom flap, and 4 the upper or sealing nap, the band of adhesive being represented by 5. Disposed along the upper edges of the wings 2 are security-flaps G, the

ter confined in the envelop, but encounters the overlapping ends of the Wings 2.

Having described our invention, what we' claim is- An envelop comprising a central or body portion, a lower ldap, and an upper sealingflap, Wings at the opposite ends ofthe body portion, a slit cut in the lower iiap, the said Wings and lower fiap being folded to bring the slit over the overlapping edges of the wings, security-flaps carried by the upper edges of the wings adjacent the sealing-flap, said flaps being` folded over the upper edges of the wings and lower flap respectively, the upper flap having a tongue adapted to be passed through the slit and into the space formed between the lower flap and the overlapping ends of the wings, substantially as set forth.

In testimony whereof we affix our signatures in presence of two witnesses.

WILLIAM A. HAMMOND. JAMES C. KAIILE. Witnesses:

GEO. G. SNowDEN, MAE MAOGUINN. 

